gistfile1.c

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

/*

Author: Cynthia Stamelos
Date: 1/28/13


*/

double distance(double x1, double y1, double x2, double y2);
double triperimeter (double x1, double y1, double x2, double y2, double x3, double y3);

double arrayX1 [14] = {0, 0, 0, 2.5, 2.5, 1, 4, 2, 0, 0, 0, 0, -1.5, 0};
double arrayX2 [14] = {5, 5, 0, -1.8, 2.5, 3, 2, 6, 4, 5, 0, 0, 2.4, 5};
double arrayX3 [14] = {4, 2.5, 2.5, -2.5, 0.5, 2.5, 0, 0, 0, 0, 0, 0, 0, 0};
double arrayY1 [14] = {0, 0, 0, -3.2, 2.5, 2, 3, 4, 0, 0, 0, 0, -2.3, 0};
double arrayY2 [14] = {5, 0, 5, 6.9, 2.5, 4, 1, 8, 0, 0, 5, 5, -0.5, 0};
double arrayY3 [14] = {3, 2.5, 2.5, 2.5, 2.5, 0, 0, 0, 0, 0, 0, 0, 0, 0};

int main()

{

    int i;

    printf("Point One \t\t Point Two \t Distance\n");
    for(i = 0; i < 8; i++)

    {
        double x1 = arrayX1[i];
        double x2 = arrayX2[i];
        double y1 = arrayY1[i];
        double y2 = arrayY2[i];

        double result = distance(x1, y1, x2, y2);
        printf("(%.1f,%.1f) \t (%.1f, %.1f) \t %.2f\n", x1, y1, x2, y2);
    }


    return 0;

}


double distance(double x1, double y1, double x2, double y2)

{


    double differenceX = (x1 - x2); //calculate the x distance
    double differenceY = (y1 - y2); //calculate the y distance

    double SQdifferenceX = (differenceX)*(differenceX);
    double SQdifferenceY = (differenceY)*(differenceY);


    return sqrt((SQdifferenceX) + (SQdifferenceY)); //return the answer as the overall distance

}

int function() {
    int j;

    printf("Point One \t\t Point Two \t Point Three \t Distance\n");
    for(j = 8; j < 14; j++)

    {
        double x1 = arrayX1[j];
        double x2 = arrayX2[j];
        double x3 = arrayX3[j];
        double y1 = arrayY1[j];
        double y2 = arrayY2[j];
        double y3 = arrayY3[j];

        double result = triperimeter(x1, y1, x2, y2, x3, y3);
        printf("(%.1f,%.1f) \t (%.1f, %.1f) \t (%.1f, %.1f) \t %.2f\n", x1, y1, x2, y2, x3, y3);
    }


    return 0;


}

double triperimeter (double x1, double y1, double x2, double y2, double x3, double y3)

{


    double distance_x1 = (x1 - x2);
    double distance_x2 = (x2 - x3);
    double distance_x3 = (x3 - x1);
    double distance_y1 = (y1 - y2);
    double distance_y2 = (y2 - y3);
    double distance_y3 = (y3 - y1);


    double tri_perimeter = sqrt((distance_x1)*(distance_x1) + (distance_y1)*(distance_y1)) + sqrt((distance_x2)*(distance_x2) + (distance_y2)*(distance_y2)) +sqrt((distance_x3)*(distance_x3) +(distance_y3)*(distance_y3));

    return tri_perimeter;

}